Proper Islamic Clothing for Girls
Here are two Ayahs from the Qur'an that Allah talks and tells us how and what to wear.
And tell the believing women to lower their gaze (from looking at forbidden things), and protect their private parts (from illegal sexual acts) and not to show off their adornment except only that which is apparent, and to draw their outer garment over their bosoms [TMQ An-Nur: 31].
O Prophet! Tell your wives and your daughters and the women of the believers to draw their cloaks (veils) all over their bodies. That will be better, that they should be known (as free respectable women) so as not to be annoyed. And Allah is Ever Oft-Forgiving, Most Merciful
[TMQ Al-Ahzab: 59].
Here is a saying of the Prophet:
In one tradition, the Prophet Muhammad is quoted as saying: ...If the woman reaches the age of puberty, no part of her body should be seen but this --- and he pointed to his face and hands.
Here is some simple facts about proper clothing:
1) Clothing must cover the entire body, with the exception of the face and the hands.
2) The clothing should not be form fitting, sheer or so eye-catching as to attract undue attention or reveal the shape of the body.
3) The clothing cannot be similar to male clothing or to the distinctive clothing worn by people of other faiths.
4) Clothing must not suggest fame or status.